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Finding the Third Proportional to 638,508 and 929,682

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Solution

The third proportional to 638,508 and 929,682 is: 1,353,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,508 : 929,682 = 929,682 : x
  2. Step 2: Convert to fraction form
    638,508/929,682 = 929,682/x
  3. Step 3: Cross multiply
    638,508x = 929,682 × 929,682
  4. Step 4: Simplify right side
    638,508x = 864,308,621,124
  5. Step 5: Solve for x
    x = 864,308,621,124/638,508
  6. Step 6: Final answer
    x = 1,353,637.89

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.